Definition of washer in English:

noun

It would have included a wide range of facilities, including round-the-clock jet washers, a car wash and garage shop.

A difference of three feet one way or another may not seem like much when you're deciding where to position a glass washer, but it can add up to hundreds or even thousands of extra steps for bartenders a week.

Mark looked up from loading the glass washer to see a new face at the bar.